In this work, the ground and low-lying excited states in GaAs tetrapod-shaped nanocrystals and in CdTe/CdS core/shell tetrapod-shaped nanocrystals are computed in the case of a finite confinement potential model using the finite element method and the effective mass approximation. For the single material tetrapod, electron energy levels are studied as a function of size parameters and the intensity of externally applied electric and magnetic fields, while for the core/shell tetrapod the electron and hole states are analyzed relative to size parameters of the core and shell thickness. The results show that the energies are strongly influenced by the tip-arm geometry, arm diameter, shell thickness and the intensity of the electric and magnetic fields.

在这项工作中，在有限约束势模型的情况下，使用有限元方法和有效质量计算了 GaAs 四足形纳米晶体和 CdTe/CdS 核/壳四足形纳米晶体中的基态和低激发态近似。对于单一材料四足体，研究电子能级作为尺寸参数以及外部施加的电场和磁场强度的函数，而对于核/壳四足体，则相对于核和壳的尺寸参数分析电子和空穴态。外壳厚度。结果表明，能量受到尖端臂几何形状、臂直径、壳厚度以及电场和磁场强度的强烈影响。